drm/i915: Apply headless DMC workaround for CNL
authorTvrtko Ursulin <tvrtko.ursulin@intel.com>
Thu, 11 Jan 2018 08:24:17 +0000 (08:24 +0000)
committerTvrtko Ursulin <tvrtko.ursulin@intel.com>
Thu, 11 Jan 2018 09:55:27 +0000 (09:55 +0000)
commit6e7a3f5244356ce079457cb3cfbc58ca01c00a2e
tree33d6a367c1b1c03e0248a075f853eb31920e6ad6
parent5a3f58dfd1420347be838546e00a4a9e847bda30
drm/i915: Apply headless DMC workaround for CNL

With firmware 1.07 having fixed the state corruption issue, we can enable
the headless GT performance workaround for CNL as well. (Equivalent to
b68763741aa2 ("drm/i915: Restore GT performance in headless mode with DMC
loaded") on other affected platforms.)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100572
Testcase: igt/gem_exec_nop/headless
Cc: Imre Deak <imre.deak@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180111082417.795-1-tvrtko.ursulin@linux.intel.com
drivers/gpu/drm/i915/intel_runtime_pm.c